DERIVATIVES - Derivative Mark-to-Market (MTM) Receivables/Payables (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Assets
Derivative receivables	$ 384,591	$ 422,802
Less: Netting agreements to assets	(304,560)	(334,900)
Less: Netting of cash collateral received	(25,022)	(27,303)
Total trading account derivatives, assets	55,009	60,599
Less: Cash collateral received	(2,332)	(808)
Less: Non-cash collateral received	(5,440)	(6,017)
Total net receivables	47,237	53,774
Liabilities
Derivative payables	373,262	411,768
Less: Netting agreements to liabilities	(304,560)	(334,900)
Less: Netting of cash collateral paid	(19,204)	(28,570)
Total derivative liabilities	49,498	48,298
Less: Cash collateral paid	(35)	(52)
Less: Non-cash collateral paid	(3,072)	(3,376)
Total net payables	46,391	44,870
Netting agreements to assets	304,560	334,900
Netting agreements to liabilities	304,560	334,900
Trading account assets
Liabilities
Does not meet applicable offsetting guidance, assets	9,000	13,000
Trading account assets | Over-the-counter
Liabilities
Less: Netting agreements to liabilities	(200,000)	(264,000)
Netting agreements to liabilities	200,000	264,000
Trading account assets | Cleared
Liabilities
Less: Netting agreements to liabilities	(67,000)	(36,000)
Netting agreements to liabilities	67,000	36,000
Trading account assets | Exchange traded
Liabilities
Less: Netting agreements to liabilities	(38,000)	(35,000)
Netting agreements to liabilities	38,000	35,000
Trading accounts liabilities
Liabilities
Does not meet applicable offsetting guidance, liabilities	13,000	15,000
Trading accounts liabilities | Over-the-counter
Assets
Less: Netting agreements to assets	(200,000)	(264,000)
Liabilities
Netting agreements to assets	200,000	264,000
Trading accounts liabilities | Cleared
Assets
Less: Netting agreements to assets	(67,000)	(36,000)
Liabilities
Netting agreements to assets	67,000	36,000
Trading accounts liabilities | Exchange traded
Assets
Less: Netting agreements to assets	(38,000)	(35,000)
Liabilities
Netting agreements to assets	38,000	35,000
Derivative instruments designated as ASC 815 hedges
Assets
Derivative receivables	1,498	3,800
Liabilities
Derivative payables	859	1,137
Derivative instruments designated as ASC 815 hedges | Interest rate contracts
Assets
Derivative receivables	449	849
Liabilities
Derivative payables	182	20
Derivative instruments designated as ASC 815 hedges | Interest rate contracts | Over-the-counter
Assets
Derivative receivables	397	695
Liabilities
Derivative payables	134	1
Derivative instruments designated as ASC 815 hedges | Interest rate contracts | Cleared
Assets
Derivative receivables	52	154
Liabilities
Derivative payables	48	19
Derivative instruments designated as ASC 815 hedges | Foreign exchange contracts
Assets
Derivative receivables	1,049	2,951
Liabilities
Derivative payables	677	1,117
Derivative instruments designated as ASC 815 hedges | Foreign exchange contracts | Over-the-counter
Assets
Derivative receivables	1,049	2,951
Liabilities
Derivative payables	677	1,117
Derivative instruments designated as ASC 815 hedges | Foreign exchange contracts | Cleared
Assets
Derivative receivables	0	0
Liabilities
Derivative payables	0	0
Derivatives instruments not designated as ASC 815 hedges
Assets
Derivative receivables	383,093	419,002
Liabilities
Derivative payables	372,403	410,631
Derivatives instruments not designated as ASC 815 hedges | Interest rate contracts
Assets
Derivative receivables	158,975	129,429
Liabilities
Derivative payables	150,894	122,112
Derivatives instruments not designated as ASC 815 hedges | Interest rate contracts | Over-the-counter
Assets
Derivative receivables	92,334	95,907
Liabilities
Derivative payables	84,463	88,776
Derivatives instruments not designated as ASC 815 hedges | Interest rate contracts | Cleared
Assets
Derivative receivables	66,590	33,447
Liabilities
Derivative payables	66,358	33,269
Derivatives instruments not designated as ASC 815 hedges | Interest rate contracts | Exchange traded
Assets
Derivative receivables	51	75
Liabilities
Derivative payables	73	67
Derivatives instruments not designated as ASC 815 hedges | Foreign exchange contracts
Assets
Derivative receivables	137,420	213,094
Liabilities
Derivative payables	128,499	204,900
Derivatives instruments not designated as ASC 815 hedges | Foreign exchange contracts | Over-the-counter
Assets
Derivative receivables	136,619	210,755
Liabilities
Derivative payables	127,735	202,582
Derivatives instruments not designated as ASC 815 hedges | Foreign exchange contracts | Cleared
Assets
Derivative receivables	791	2,329
Liabilities
Derivative payables	751	2,298
Derivatives instruments not designated as ASC 815 hedges | Foreign exchange contracts | Trading account assets | Exchange traded
Assets
Derivative receivables	10	10
Derivatives instruments not designated as ASC 815 hedges | Foreign exchange contracts | Trading accounts liabilities | Exchange traded
Liabilities
Derivative payables	13	20
Derivatives instruments not designated as ASC 815 hedges | Equity contracts
Assets
Derivative receivables	61,092	55,144
Liabilities
Derivative payables	66,145	61,736
Derivatives instruments not designated as ASC 815 hedges | Equity contracts | Over-the-counter
Assets
Derivative receivables	21,321	19,262
Liabilities
Derivative payables	27,446	25,950
Derivatives instruments not designated as ASC 815 hedges | Equity contracts | Cleared
Assets
Derivative receivables	0	0
Liabilities
Derivative payables	0	0
Derivatives instruments not designated as ASC 815 hedges | Equity contracts | Exchange traded
Assets
Derivative receivables	39,771	35,882
Liabilities
Derivative payables	38,699	35,786
Derivatives instruments not designated as ASC 815 hedges | Commodity and other contracts
Assets
Derivative receivables	16,554	12,620
Liabilities
Derivative payables	18,646	14,630
Derivatives instruments not designated as ASC 815 hedges | Commodity and other contracts | Over-the-counter
Assets
Derivative receivables	15,863	11,945
Liabilities
Derivative payables	17,343	13,804
Derivatives instruments not designated as ASC 815 hedges | Commodity and other contracts | Exchange traded
Assets
Derivative receivables	691	675
Liabilities
Derivative payables	1,303	826
Derivatives instruments not designated as ASC 815 hedges | Credit derivatives
Assets
Derivative receivables	9,052	8,715
Liabilities
Derivative payables	8,219	7,253
Derivatives instruments not designated as ASC 815 hedges | Credit derivatives | Over-the-counter
Assets
Derivative receivables	6,922	6,907
Liabilities
Derivative payables	6,274	5,569
Derivatives instruments not designated as ASC 815 hedges | Credit derivatives | Cleared
Assets
Derivative receivables	2,130	1,808
Liabilities
Derivative payables	$ 1,945	$ 1,684